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Jones MB, Gibson L, Gimenez-Zapiola M, Guerra A, Bhatti G, Broadway D, Tea J, Prasad A, Gates R, Hinton E, Jorge RE, Marsh L. Physical Violence and Aggression in Parkinson's Disease: A Systematic Review. J Acad Consult Liaison Psychiatry 2024:S2667-2960(24)00015-6. [PMID: 38311061 DOI: 10.1016/j.jaclp.2024.01.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 01/10/2024] [Accepted: 01/28/2024] [Indexed: 02/06/2024]
Abstract
BACKGROUND Physical violence and aggression (PVA), defined as behaviors with the potential to cause bodily injury, are unfortunate risks in the management of all-cause neurodegenerative dementias. While dementia in Parkinson's disease (PD) may not be evident for many years after clinical onset, neuropsychiatric disturbances occur at all stages of the disease. At issue is whether PVA in PD is associated with clinical factors that can be targets for prevention and management in the absence of a prevailing dementia syndrome. OBJECTIVE This systematic review examined the extent to which PVA in PD without dementia is a clinically significant concern and whether it is associated with factors that could warrant proactive management. METHODS A systematic search of 9 electronic databases used MeSH headings and equivalent terms for PD, aggression, and violence. Eligible manuscripts were original articles that were published in peer-reviewed journals and reported on adults with PD in the awake state with PVA as possible outcomes. Extracted data included study design, PD ascertainment methods and characteristics, PVA assessment methods, subject demographics, psychiatric and medical comorbidities, and pertinent results. Inciting and confounding factors were extracted from case reports. Quality assessment tools were applied in accordance with the study design (e.g., observational, qualitative, or case report). RESULTS The search identified 10 manuscripts: 2 observational quantitative studies (total n with PD = 545), 1 qualitative study (n with PD = 20), and 7 case reports (n = 7). The observational studies suggested that PVA is less common than other neuropsychiatric disturbances, but heterogeneous methods and quality concerns prevented further conclusions. In the case reports, all patients were male, and most were early onset. In 6 of the reports, PVA occurred in the context of bilateral subthalamic nucleus deep brain stimulation. CONCLUSIONS PVA, while relatively rare in PD, can be a significant management issue that is associated with select premorbid characteristics and antiparkinsonian motor treatments. As PVA may be under-reported, further understanding of its frequency, causes, risk factors, and outcomes would benefit from its systematic assessment, ideally using self-report and informant-based questionnaires.
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Affiliation(s)
- Melissa B Jones
- Michael E. DeBakey VA Medical Center, Houston, TX; Department of Medicine, Baylor College of Medicine, Houston, TX.
| | - Lakeshia Gibson
- University of Mississippi Medical Center, Jackson, MS; Brigham and Women's Hospital, Boston, MA
| | - Malena Gimenez-Zapiola
- Michael E. DeBakey VA Medical Center, Houston, TX; Department of Medicine, Baylor College of Medicine, Houston, TX
| | - Ana Guerra
- Michael E. DeBakey VA Medical Center, Houston, TX; Department of Medicine, Baylor College of Medicine, Houston, TX
| | - Gursimrat Bhatti
- Michael E. DeBakey VA Medical Center, Houston, TX; Department of Medicine, Baylor College of Medicine, Houston, TX
| | - Dakota Broadway
- Michael E. DeBakey VA Medical Center, Houston, TX; Department of Medicine, Baylor College of Medicine, Houston, TX
| | - Juliann Tea
- Michael E. DeBakey VA Medical Center, Houston, TX; Department of Medicine, Baylor College of Medicine, Houston, TX
| | - Aksa Prasad
- Michael E. DeBakey VA Medical Center, Houston, TX; Department of Medicine, Baylor College of Medicine, Houston, TX; The University of Texas Rio Grande Valley, Edinburg, TX
| | - Rachel Gates
- Department of Medicine, Baylor College of Medicine, Houston, TX; UCHealth University of Colorado Hospital, Aurora, CO
| | | | - Ricardo E Jorge
- Michael E. DeBakey VA Medical Center, Houston, TX; Department of Medicine, Baylor College of Medicine, Houston, TX
| | - Laura Marsh
- Michael E. DeBakey VA Medical Center, Houston, TX; Department of Medicine, Baylor College of Medicine, Houston, TX
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Fritz C, Barrette LX, Prasad A, Triantafillou V, Suresh N, De Ravin E, Rajasekaran K. Human papillomavirus related oropharyngeal cancer: identifying and quantifying topics of patient interest. J Laryngol Otol 2023; 137:1141-1148. [PMID: 36794539 DOI: 10.1017/s0022215123000270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
OBJECTIVE As the incidence of human papillomavirus related oropharyngeal cancer continues to rise, it is increasingly important for public understanding to keep pace. This study aimed to identify areas of patient interest and concern regarding human papillomavirus and oropharyngeal cancer. METHOD This study was a retrospective survey of search queries containing the keywords 'HPV cancer' between September 2015 and March 2021. RESULTS There was 3.5-fold more interest in human papillomavirus related oropharyngeal cancer (15 800 searches per month) compared with human papillomavirus related cervical cancer (4500 searches per month). Among searches referencing cancer appearance, 96.8 per cent pertained to the head and neck region (3050 searches per month). Among vaccination searches, 16 of 47 (34.0 per cent; 600 searches per month) referenced human papillomavirus vaccines as being a cause of cancer rather than preventing cancer. CONCLUSION The vast majority of online searches into human papillomavirus cancer pertain to the oropharynx. There are relatively few search queries on the topic of vaccination preventing human papillomavirus associated oropharyngeal cancer, which highlights the continued importance of patient education and awareness campaigns.
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Affiliation(s)
- C Fritz
- Department of Otorhinolaryngology - Head & Neck Surgery, University of Pennsylvania, Philadelphia, PA, USA
| | - L-X Barrette
- Department of Otorhinolaryngology - Head & Neck Surgery, University of Pennsylvania, Philadelphia, PA, USA
- Leonard Davis Institute of Health Economics, University of Pennsylvania, Philadelphia, PA, USA
| | - A Prasad
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - V Triantafillou
- Department of Otorhinolaryngology - Head & Neck Surgery, University of Pennsylvania, Philadelphia, PA, USA
| | - N Suresh
- Department of Otorhinolaryngology - Head & Neck Surgery, University of Pennsylvania, Philadelphia, PA, USA
| | - E De Ravin
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - K Rajasekaran
- Department of Otorhinolaryngology - Head & Neck Surgery, University of Pennsylvania, Philadelphia, PA, USA
- Leonard Davis Institute of Health Economics, University of Pennsylvania, Philadelphia, PA, USA
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Balasundaram A, Srinivasan S, Prasad A, Malik J, Kumar A. Hippocampus Segmentation-Based Alzheimer's Disease Diagnosis and Classification of MRI Images. Arab J Sci Eng 2023; 48:1-17. [PMID: 36619218 PMCID: PMC9810248 DOI: 10.1007/s13369-022-07538-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Accepted: 12/12/2022] [Indexed: 01/05/2023]
Abstract
Alzheimer's disease represents a neurological condition characterized by steady cognitive decline and eventual memory loss due to the death of brain cells. It is one of the most prominent dementia types observed in patients and which hence underlines the imminent need for potential methods to diagnose the disease early on. This work considers a novel approach by utilizing a reduced version of one of the datasets used in this work to achieve a considerably accurate prediction while also enabling quicker training. It leverages image segmentation to isolate the hippocampus region from brain MRI images and then strikes a comparison between models trained on the segmented portions and models trained on complete images. This research uses two datasets-4 classes of images from Kaggle and a popular OASIS 2 MRI and demographic dataset. A deep learning-based approach was adopted to train the Kaggle dataset to perform severity classification, and the hippocampus region segmented from a reduced version of the OASIS dataset was trained on supervised and ensemble learning algorithms to detect Alzheimer's disease. The metric used for the assessment of model performance is classification accuracy. A comparative analysis between the proposed approach and existing work was also performed, and it was observed that the proposed approach is effective in the early diagnosis of Alzheimer's disease.
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Affiliation(s)
- A. Balasundaram
- School of Computer Science and Engineering, Center for Cyber Physical Systems, Vellore Institute of Technology, Chennai, Tamil Nadu India
| | - Sruthi Srinivasan
- School of Computer Science and Engineering, Vellore Institute of Technology (VIT), Chennai, Tamil Nadu India
| | - A. Prasad
- School of Computer Science and Engineering, Vellore Institute of Technology (VIT), Chennai, Tamil Nadu India
| | - Jahan Malik
- School of Computer Science and Engineering, Vellore Institute of Technology (VIT), Chennai, Tamil Nadu India
| | - Ayush Kumar
- School of Computer Science and Engineering, Vellore Institute of Technology (VIT), Chennai, Tamil Nadu India
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Jain A, Shivamallu C, Prasad A, Dharmashekhar C. 314P Let’s bring back old drugs to conquer resistance to KRAS G12C inhibitors in NSCLC. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.10.343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
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Loftus MJ, Young-Sharma T, Lee SJ, Wati S, Badoordeen GZ, Blakeway LV, Byers S, Cheng AC, Cooper BS, Cottingham H, Jenney A, Hawkey J, Macesic N, Naidu R, Prasad A, Prasad V, Tudravu L, Vakatawa T, van Gorp E, Wisniewski JA, Rafai E, Peleg AY, Stewardson AJ. Attributable Mortality and Excess Length of Stay associated with Third-Generation Cephalosporin Resistant Enterobacterales Bloodstream Infections - a prospective cohort study in Suva, Fiji. J Glob Antimicrob Resist 2022; 30:286-293. [PMID: 35738385 PMCID: PMC9452645 DOI: 10.1016/j.jgar.2022.06.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 06/11/2022] [Indexed: 11/02/2022] Open
Abstract
OBJECTIVES There are scant primary clinical data on antimicrobial resistance (AMR) burden from low- and middle-income countries (LMICs). We adapted recent World Health Organization methodology to measure the impact of third-generation cephalosporin resistance (3GC-R) on mortality and excess length of hospital stay in Fiji. METHODS We conducted a prospective cohort study of inpatients with Enterobacterales bloodstream infections (BSIs) at Colonial War Memorial Hospital, Suva. We used cause-specific Cox proportional hazards models to estimate the effect of 3GC-R on the daily risk (hazard) of in-hospital mortality and being discharged alive (competing risks), and multistate modelling to estimate the excess length of hospital stay. RESULTS From July 2020 to February 2021 we identified 162 consecutive Enterobacterales BSIs, 3GC-R was present in 66 (40.7%). Crude mortality for patients with 3GC-susceptible and 3GC-R BSIs was 16.7% (16/96) and 30.3% (20/66), respectively. 3GC-R was not associated with the in-hospital mortality hazard rate (adjusted hazard ratio (aHR) 1.13, 95% CI 0.51-2.53) or being discharged alive (aHR 0.99, 95% CI 0.65-1.50), whereas Charlson comorbidity index score (aHR 1.62, 95% CI 1.36-1.93) and Pitt bacteraemia score (aHR 3.57, 95% CI 1.31-9.71) were both associated with an increased hazard rate of in-hospital mortality. 3GC-R was associated with an increased length of stay of 2.6 days (95% CI 2.5-2.8). 3GC-R was more common among hospital-associated infections, but genomics did not identify clonal transmission. CONCLUSION Patients with Enterobacterales BSIs in Fiji had high mortality. There were high rates of 3GC-R, which was associated with increased hospital length of stay but not with in-hospital mortality.
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Affiliation(s)
- M J Loftus
- Department of Infectious Diseases, The Alfred Hospital and Central Clinical School, Monash University, Melbourne, Australia
| | | | - S J Lee
- Department of Infectious Diseases, The Alfred Hospital and Central Clinical School, Monash University, Melbourne, Australia
| | - S Wati
- Colonial War Memorial Hospital, Suva, Fiji
| | - G Z Badoordeen
- Department of Infectious Diseases, The Alfred Hospital and Central Clinical School, Monash University, Melbourne, Australia
| | - L V Blakeway
- Department of Infectious Diseases, The Alfred Hospital and Central Clinical School, Monash University, Melbourne, Australia
| | - Smh Byers
- Department of Infectious Diseases, The Alfred Hospital and Central Clinical School, Monash University, Melbourne, Australia
| | - A C Cheng
- Department of Infectious Diseases, The Alfred Hospital and Central Clinical School, Monash University, Melbourne, Australia; School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia
| | - B S Cooper
- Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, The United Kingdom; Mahidol-Oxford Tropical Medicine Research Unit, Mahidol University, Bangkok, Thailand
| | - H Cottingham
- Department of Infectious Diseases, The Alfred Hospital and Central Clinical School, Monash University, Melbourne, Australia
| | - Awj Jenney
- Department of Infectious Diseases, The Alfred Hospital and Central Clinical School, Monash University, Melbourne, Australia; Fiji National University, Suva, Fiji
| | - J Hawkey
- Department of Infectious Diseases, The Alfred Hospital and Central Clinical School, Monash University, Melbourne, Australia
| | - N Macesic
- Department of Infectious Diseases, The Alfred Hospital and Central Clinical School, Monash University, Melbourne, Australia; Centre to Impact AMR, Monash University, Melbourne, Australia
| | - R Naidu
- Colonial War Memorial Hospital, Suva, Fiji
| | - A Prasad
- Colonial War Memorial Hospital, Suva, Fiji
| | - V Prasad
- Colonial War Memorial Hospital, Suva, Fiji
| | - L Tudravu
- Colonial War Memorial Hospital, Suva, Fiji
| | - T Vakatawa
- Colonial War Memorial Hospital, Suva, Fiji
| | - E van Gorp
- Department of Infectious Diseases, The Alfred Hospital and Central Clinical School, Monash University, Melbourne, Australia
| | - J A Wisniewski
- Department of Infectious Diseases, The Alfred Hospital and Central Clinical School, Monash University, Melbourne, Australia
| | - E Rafai
- Fiji Ministry of Health and Medical Services, Suva, Fiji
| | - A Y Peleg
- Department of Infectious Diseases, The Alfred Hospital and Central Clinical School, Monash University, Melbourne, Australia; Infection and Immunity Program, Monash Biomedicine Discovery Institute, Department of Microbiology, Monash University, Clayton, Australia.
| | - A J Stewardson
- Department of Infectious Diseases, The Alfred Hospital and Central Clinical School, Monash University, Melbourne, Australia.
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Praveenkumar NB, Prasad A, Bindu L, Biju S, Gleeja VL. Amelioration of fly annoyance in dairy cattle by using illuminated fly traps. Journal of Veterinary and Animal Sciences 2022. [DOI: 10.51966/jvas.2022.53.1.13-17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Blood-sucking and biting flies are a significant source of annoyance to warm-blooded animals. Behavioural changes in animals may include attempts to pursue, remove or avoid the disturbance caused by the fly by means of body movement. In the presesnt study the behaviour during a 10 min period in each four-hour interval i.e. 1 AM, 5 AM, 9 AM, 1 PM, 5 PM and 9 PM was analysed and noted for inclusion in the ethogram. The cows with light trap (treatment) were compared with those without light traps (control) to study the effectivenss of the fly trap in reducing annoyance in cattle. All the seven avaoidance behaviours were counted such as head movement, ear shaking, tail movement, skin twitching, licking, kicking on belly and restlessness and were recorded by scan method. The results of this study indicated that the incidence of all the seven fly avoidance behaviours were significantly higher (p<0.01) in the control group. It could also be concluded that the occurance of all the behaviours in the control group at 1 PM were significantly high followed by 5 PM. The findings of the study suggest that fly activity in dairy farms was high during the afternoon hours followed by evening time and illuminated fly traps could be used effectively in controlling flies, so that the fly avoidance behavior by cattle was reduced on dairy farms.
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Naveena T, Sarangi LN, Rana SK, Prasad A, Prabha TS, Jhansi D, Ponnanna NM, Sharma GK. Seroprevalence to common infectious abortifacient and infertility causing agents in the dairy herds of India. Iran J Vet Res 2022; 23:189-195. [PMID: 36425611 PMCID: PMC9681985 DOI: 10.22099/ijvr.2022.42574.6184] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 04/04/2022] [Accepted: 05/23/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND Information on the prevalence of infectious agents in dairy farms forms the basis for formulating a suitable control strategy; especially in endemic situations. AIMS A cross-sectional study was undertaken to determine the prevalence of six economically important bovine diseases, causing reproductive disorders including bovine abortion in organized dairy herds in India. METHODS A total of 1,075 animals (cattle and buffaloes) from 09 dairy farms were screened by ELISA tests. RESULTS Bovine viral diarrhoea (BVD) was the most prevalent (56.5%) disease followed by infectious bovine rhinotracheitis (IBR) (45.4%). Prevalence of Q-fever (5.4%) and neosporosis (6.1%) were less on the farms. Although 16.3% of the samples turned positive for brucellosis, the contribution of calf-hood vaccination (B. abortus S19 vaccine) to the prevalence of antibodies cannot be ruled out. The overall prevalence of bovine anaplasmosis, known to cause sporadic abortions in dairy herds, was 34.1% in the 9 farms with a prevalence of less than 20% in 5 farms. Infection of multiple abortifacient (seroprevalence to more than two pathogens) was recorded in 56.8% of animals. A very strong association was observed between BVD and brucellosis (Odds ratio 14.2; P<0.001). Further, a positive association was also seen between seroprevalence of IBR and anaplasmosis, and neosporosis and Q fever (P<0.05). CONCLUSION Viral diseases were found to be more common in the dairy herds than bacterial and protozoan diseases. Increased susceptibility of IBR seropositive cows to other bacterial and viral infections was observed.
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Affiliation(s)
- T. Naveena
- MSc in Microbiology, Group of Animal Health, National Dairy Development Board Research and Development Laboratory, IIL Campus, Gachibowli, Hyderabad 500032, Telangana, India
| | - L. N. Sarangi
- Group of Animal Health, National Dairy Development Board Research and Development Laboratory, IIL Campus, Gachibowli, Hyderabad 500032, Telangana, India
| | - S. K. Rana
- Group of Animal Health, National Dairy Development Board, Anand 388001, Gujarat, India
| | - A. Prasad
- MVSc in Veterinary Microbiology, Group of Animal Health, National Dairy Development Board Research and Development Laboratory, IIL Campus, Gachibowli, Hyderabad 500032, Telangana, India
| | - T. S. Prabha
- MSc in Biotechnology, Group of Animal Health, National Dairy Development Board Research and Development Laboratory, IIL Campus, Gachibowli, Hyderabad 500032, Telangana, India
| | - D. Jhansi
- MTech in Biotechnology, Group of Animal Health, National Dairy Development Board Research and Development Laboratory, IIL Campus, Gachibowli, Hyderabad 500032, Telangana, India
| | - N. M. Ponnanna
- Group of Animal Health, National Dairy Development Board Research and Development Laboratory, IIL Campus, Gachibowli, Hyderabad 500032, Telangana, India
| | - G. K. Sharma
- MVSc in Veterinary Microbiology, Group of Animal Health, National Dairy Development Board, Anand 388001, Gujarat, India
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Hosure S, Rajeev TS, Jiji RS, George PR, Prasad A, Gleeja VL. Effectiveness of livestock delivery services of dairy cooperatives of Kerala state. Journal of Veterinary and Animal Sciences 2022. [DOI: 10.51966/jvas.2022.53.3.340-347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
The present study aimed to know the effectiveness of livestock services delivered by the veterinarians working under state regional cooperative milk producers’ union (SRCMPU) and farmers views on these services. An ex-post-facto research design was adopted for the study. A total of fifteen veterinarians working under SRCMPU, Kerala, and thirty livestock farmers dependent on SRCMPU for the livestock services were selected. Data collection was done through using structured interview schedule method. The result from the study revealed that majority of the veterinarians and livestock farmers perceived curative services (60.00% and 46.66%), production services (53.33% and 63.33%), preventive services (53.34% and 56.66%), extension services (60.00% and 50.00%) and miscellaneous services (60.00% and 60.00%) as average. About satisfaction level, majority of the livestock farmers had medium level of satisfaction towards curative services (66.66%), production services (43.33%), preventive services (60.00%), extension services (50.00%) and miscellaneous services (60.00%). It is concluded from the result that there is need to improve the quality of livestock services from both veterinarians and farmers point of view. It is the need of hour to analyze and interpret the current scenario of service delivery systems of state regional cooperative milk producers’ union through assessing the constraints perceived by them in livestock service delivery.
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Erotocritou M, Prasad A, Burns S, Haddo O, Bartlett W, Mavroveli S, Hanna S, Berber O. 458 Patient Willingness to Undergo Elective Orthopaedic Surgery in Relation to the COVID-19 Outbreak. Br J Surg 2021. [PMCID: PMC8135673 DOI: 10.1093/bjs/znab135.036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Objective To determine patients’ willingness to undergo elective orthopaedic surgery during the COVID-19 pandemic. Method 4 groups of patients were chosen based on type of surgery. A telephone survey was conducted, including questions on diagnosis, symptom duration, pain severity, co-morbidities, anxiety levels for COVID-19 and surgery. Patients were given the conditions for surgery and asked whether they would undergo surgery, have the operation carried out by another consultant and any factors that would increase their confidence. Results Of 200 patients, 156 participated (78%). 78.2% were willing to undergo surgery. There was a statistically significant difference in willingness between age groups 40-49 (100%) and 80 + (58.3%). Differences in willingness between surgery types, BOA risk class, sex, symptom duration and pain scores, were not statistically significant. Patients unwilling to undergo surgery reported statistically higher anxiety scores for health (4.39) and surgery (4.62) compared to the willing group (2.89 and 2.71 respectively). Patients’ main concern was contracting COVID (35.2%). Conclusions Our study demonstrated that the majority of patients were willing to undergo surgery. This can be used to inform strategies for resuming elective surgeries. It has also highlighted several areas in patient perception that warrant further investigation and the importance of enhanced consent on the specific risks.
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Affiliation(s)
- M Erotocritou
- Whittington Health NHS Trust, London, United Kingdom
| | - A Prasad
- Whittington Health NHS Trust, London, United Kingdom
| | - S Burns
- Whittington Health NHS Trust, London, United Kingdom
| | - O Haddo
- Whittington Health NHS Trust, London, United Kingdom
| | - W Bartlett
- Whittington Health NHS Trust, London, United Kingdom
| | - S Mavroveli
- Imperial College London, London, United Kingdom
| | - S Hanna
- Royal London NHS Trust, London, United Kingdom
| | - O Berber
- Whittington Health NHS Trust, London, United Kingdom
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Jisha N, Girish Varma G, Gleeja V, Prasad A, Beena V, Karthiayini K, Sejian V. Annual temperature profile of Thrissur: a climate change perspective. J Vet Anim Sci 2021. [DOI: 10.51966/jvas.2021.52.1.26-31] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Bihaqi SJ, Allaie IM, Banday MAA, Sankar M, Wani ZA, Prasad A. Multiple anthelmintic resistance in gastrointestinal nematodes of Caprines on Mountain Research Centre for Sheep and Goat at Kashmir Valley, India. Parasite Epidemiol Control 2020; 11:e00163. [PMID: 32984565 PMCID: PMC7494505 DOI: 10.1016/j.parepi.2020.e00163] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2019] [Revised: 05/03/2020] [Accepted: 06/23/2020] [Indexed: 11/12/2022] Open
Abstract
The study was conducted to evaluate the status of anthelmintic resistance in Gastro-Intestinal Nematodes (GINs) of goats at an organized farm located in Kashmir, as there is no report of resistance against these parasites of goats from this temperate region, although it has been reported worldwide including India. Caprines reared at this farm exhibited reduced efficacy to multiple anthelmintics following treatments with Fenbendazole (FBZ), Closantel and Ivermectin (IVM) in Faecal Egg Count Reduction Test (FECRT). The results suggested that the overall efficacy was highest for IVM at 83.5% and 90.0% on 7th and 14th day post-treatment, respectively and least for FBZ at 44.3% and 62.5%, respectively, whereas the corresponding figures for closantel were 68.3% and 86.2%, respectively. The pre-treatment faecal culture revealed Haemonchus contortus, Teladorsagia circumcincta and Trichostrongylus colubriformis as predominant strongyles, however, in post-treatment samples, only H. contortus was observed. Further, the infective larvae were subjected to Allele specific PCR (AS-PCR) for accurate diagnosis of BZ resistance. The AS-PCR revealed 52% of H. contortus were homozygous resistant (rr) and 17% were heterozygous (rS) on day “0” before treatment and 100% homozygous resistant (rr) on 7th day post treatment. In both T. colubriformis and T. circumcincta, 100% population was homozygous susceptible (SS) at day “0” before treatment. The overall frequency of resistant (r) allele for H. contortus was 60.5% and for susceptible allele (s) was 39.5%. For T. colubriformis and T. circumcincta the frequency of susceptible allele (s) was 100%. The survey indicated that the GINs of goats on the farm have developed multiple anthelmintic resistance to FBZ, closantel and IVM and the condition is alarming in the farm. Moreover surveillance studies about status of anthelmintic resistance in other farms (Govternment as well as Private) of Kashmir valley should be carried out at large scale to develop effective and sustainable control strategies against GI Nematodes.
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Affiliation(s)
- S J Bihaqi
- Division of Veterinary Parasitology, Faculty of Veterinary Sciences & Animal Husbandry, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Shuhama Campus, Alusteng, Srinagar, Kashmir-190006, J&K, India
| | - I M Allaie
- Division of Veterinary Parasitology, Faculty of Veterinary Sciences & Animal Husbandry, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Shuhama Campus, Alusteng, Srinagar, Kashmir-190006, J&K, India
| | - M A A Banday
- Division of Veterinary Parasitology, Faculty of Veterinary Sciences & Animal Husbandry, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Shuhama Campus, Alusteng, Srinagar, Kashmir-190006, J&K, India
| | - M Sankar
- Division of Parasitology, Indian Veterinary Research Institute, Izzatnagar, Bareilly-243122, UP, India
| | - Z A Wani
- Division of Veterinary Parasitology, Faculty of Veterinary Sciences & Animal Husbandry, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Shuhama Campus, Alusteng, Srinagar, Kashmir-190006, J&K, India
| | - A Prasad
- Division of Temperate Animal Husbandry, Regional Research Station of Indian Veterinary Research Institute, Mukteswar, Nainital-263138, Uttarakhand, India
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Arora M, Prasad A, Kulshreshtha R, Baijal A. Significance of third trimester ultrasound in detecting congenital abnormalities of kidney and urinary tract-a prospective study. J Pediatr Urol 2019; 15:334-340. [PMID: 31031163 DOI: 10.1016/j.jpurol.2019.03.027] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Revised: 02/13/2019] [Accepted: 03/29/2019] [Indexed: 11/16/2022]
Abstract
INTRODUCTION Antenatal hydronephrosis is defined as dilatation of the renal pelvis with or without dilatation of calyces in the developing fetus. Although second trimester scan is more sensitive in detecting congenital abnormalities of kidney and urinary tract (CAKUT), it has been suggested that the third trimester scan is more predictive of postnatal outcome. OBJECTIVES This study aims to determine the incidence of antenatal hydronephrosis at our institution and the significance of third trimester scan in detecting CAKUT postnatally. STUDY DESIGN It is a prospective observational study. During the 3-year study period from June 2013 to May 2016, all cases of antenatal hydronephrosis, defined as renal pelvic diameter (RPD) ≥4 mm in the second trimester and ≥7 mm in the third trimester scan, diagnosed in the fetal medicine unit of our hospital, were included and were followed up postnatally for 6 months. RESULTS In the fetal medicine unit, 32,443 women were screened for anomalies, and hydronephrosis was detected in 269 cases. Incidence of antenatal hydronephrosis was observed to be 0.83% in our institution. In second trimester scan, of 80 cases with the left hydronephrosis, only 22 (27.5%) had postnatal CAKUT and of 70 cases with the right hydronephrosis, 18 (25.7%) had CAKUT. In the third trimester scan, it was observed that with RPD >10 mm, on the left side hydronephrosis, 87% had CAKUT on postnatal scan, and 85% with the right hydronephrosis had CAKUT. CONCLUSION Sixty percent cases of hydronephrosis detected in the second trimester scan resolve in utero. In the third trimester scan with RPD <10 mm, the possibility of postnatal CAKUT is 23%, whereas if RPD is > 10 mm, then the possibility of postnatal CAKUT is 86%.
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Affiliation(s)
- M Arora
- Pediatric Surgery, Sir Ganga Ram Hospital, New Delhi, India
| | - A Prasad
- Department of Pediatric Surgery, Sir Ganga Ram Hospital, New Delhi, India.
| | - R Kulshreshtha
- Department of Pediatric Surgery, Sir Ganga Ram Hospital, New Delhi, India
| | - A Baijal
- Department of Fetal Medicine, Sir Ganga Ram Hospital, New Delhi, India
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Mukherjee F, Bahekar VS, Pasha SY, Kannan P, Prasad A, Rana SK, Kanani AN, Sharma GK, Premalatha D, Srinivasan VA. Isolation and analysis of the molecular epidemiology and zoonotic significance of Mycobacterium tuberculosis in domestic and wildlife ruminants from three states in India. REV SCI TECH OIE 2019; 37:999-1012. [PMID: 30964453 DOI: 10.20506/rst.37.3.2902] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The majority of tuberculosis cases in ruminants are caused by Mycobacterium bovis (MB). However, in this study, the authors reported the isolation of Mycobacterium tuberculosis (MT) from bovine milk, nasal swabs and post-mortem tissue samples (n = 841) collected from cattle and buffaloes in the states of Telangana, Maharashtra and Gujarat in India in the period from 2010 to 2015. The isolates (n = 7) were confirmed as Mycobacterium due to their growth characteristics and colony morphology in a commercial liquid medium Mycobacterial Growth Indicator Tube (MGIT)™ employing the BD BACTEC™ MGIT™ 960 system and the Löwenstein-Jensen (LJ) medium supplemented with glycerol but not with sodium pyruvate, and BD-DIFCO™ Middlebrook 7H10 agar containing oleic albumin dextrose catalase (OADC). These isolates were initially identified as members of the M. tuberculosis complex (MTC) using a commercial nested polymerase chain reaction (PCR) kit based on the IS6110 MTC specific nucleotide sequence. The isolates were confirmed as MT using three commercial line probe assay kits, were further genotyped, and the spoligotypes identified were of East African Indian (EAI) 3_IND, EAI5, Central-Asian (CAS) 1_DELHI, U and T1 lineages. Two MT isolates from one antelope (Antilope cervipara) andone gazelle (Gazella bennettii) from Gujarat, which were identified previously, were spoligotyped during this study and identified as belonging to EAI3_IND and EAI5 lineages, respectively. The epidemiological significance and zoonotic implications of regional presence and documentation of the same or two differents poligotypes in different species within the family Bovidae as well as humans is discussed.
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Walters S, Prasad A, Guevel B, Sarraf KM, Achan P, Dawson-Bowling S, Millington S, Hanna SA. Systematic review of the outcome of cemented versus uncemented total hip arthroplasty following pelvic irradiation. Musculoskelet Surg 2019; 103:221-230. [PMID: 30937859 DOI: 10.1007/s12306-019-00597-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2018] [Accepted: 02/08/2019] [Indexed: 10/27/2022]
Abstract
PURPOSE The objective of this study is to evaluate the outcomes of total hip arthroplasty (THA) in patients with radiation-related changes to the bone, and specifically whether there is a difference in outcomes between cemented and uncemented acetabular components. METHODS A database search was performed to identify available studies reporting adults undergoing THA who have previously had pelvic irradiation. Data were extracted and analysed with respect to the use of cemented versus uncemented acetabular components. Statistical analysis was performed using the Chi-square test for independence. RESULTS The all-cause revision rate was 24% in the cemented THA group (27/111), compared with 15% of uncemented THAs (22/143) (p = 0.073). Revision for acetabular aseptic loosening occurred in 16% of cases (18/111) in the cemented group and 10% (15/143) in the uncemented group (p = 0.178). Acetabular aseptic loosening was reported in 24% of cemented THAs (27/111) and 14% of uncemented THAs (20/143), which was statistically significant (p = 0.035). Not all of these went on to have revision THA. The Incidence of prosthetic joint infection was similar in both groups. CONCLUSION Overall outcomes appear to be better for uncemented THAs in post-radiotherapy patients, with a significantly lower rate of aseptic loosening and an appreciable (but not statistically significant) reduction in revision rate. The best outcomes seem to be associated with the use of acetabular reinforcement across both cemented and uncemented groups, but further work is needed to evaluate this.
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Affiliation(s)
- S Walters
- Health Education England, London, UK
| | - A Prasad
- Imperial College London, London, UK
| | - B Guevel
- Health Education England, London, UK
| | - K M Sarraf
- Imperial Healthcare NHS Trust, London, UK
| | - P Achan
- Barts Health NHS Trust, London, UK
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Prasad A, Brehm C, Goldenberg M, Ghodsizad A, Koerner M, Banayosy AE, Singbartl K. Assessing Left Ventricular Unloading and Wall Tension to Predict the Need for Durable Mechanical Circulatory Support after Peripheral VA-ECMO. J Heart Lung Transplant 2019. [DOI: 10.1016/j.healun.2019.01.416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Singer AJ, Prasad A, Thode Jr HC. 449 Differences in Patient and Burn Characteristics between the National Burn Registry and the Healthcare Cost and Utilization Project. J Burn Care Res 2019. [DOI: 10.1093/jbcr/irz013.345] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
| | - A Prasad
- Stony Brook University, Stony Brook, NY
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Nehra AK, Gowane GR, Kuriyal A, Chaurasiya A, Kumar R, Bhinsara DB, Parthasarathi BC, Bhawana K, Khare RK, Prasad A, Chandra D, Sankar M. Immune response against subclinical haemonchosis in Himalayan hill goats. Vet Parasitol 2019; 267:47-53. [PMID: 30878085 DOI: 10.1016/j.vetpar.2019.01.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Revised: 01/12/2019] [Accepted: 01/18/2019] [Indexed: 01/07/2023]
Abstract
Haemonchosis commonly occurs as chronic and subclinical infection in small ruminants, and understanding of immunological response against subclinical haemonchosis is of paramount importance for designing and implementing effective control strategies. The present study was designed to evaluate immunological response during subclinical haemonchosis, experimentally established in goats. Sixteen 5-6 month-old helminth naive kids were randomly allocated into one of two groups, infected and uninfected; the infected group being infected per os with 250 Haemonchus contortus larvae per kg body weight. Faecal, blood and serum samples were collected every third day up to 30 days post-infection (DPI), thereafter weekly up to 58 DPI to record changes in faecal egg count (FEC), haemoglobin (Hb), packed cell volume (PCV), peripheral eosinophil percentage and immunological parameters, such as macrophage cytokine interleukin-12 (IL-12), Th1 cytokine (IFN-γ), Th2 cytokines (IL-4, 13, 25, 33) and immunoglobulins (IgG and IgE). Pre-patent period of H. contortus in the present study was 18 days and eggs per gram (EPG) peaked on 30 DPI. The total reduction in body weight gain in the infected group was 26 g per day when compared with uninfected animals. Hb (7.35 ± 0.34 g/dL in infected animals compared with 9.76 ± 0.67 in control animals) and PCV levels (22 ± 1.54 g/dL in infected animals compared with 29.2 ± 1.27 in control animals) decreased significantly up to 44 DPI in infected group (P = 0.000). IL-4, IL-13, IL-33, IgG and IgE showed significant increase in infected animals at different periods. IFN-γ, IL-12 and IL-25 did not show any significant changes barring a steep rise of IFN-γ on 27 DPI. A positive correlation was observed between IgE and IL-4 in subclinical haemonchosis. Of particular note was that all the major cytokines, such as IFN-γ (P = 0.000), IL-4 (P = 0.000), IL-13 (P = 0.009), and both IgG (P = 0.000) and IgE (P = 0.003), were observed at the lowest concentration on 24 DPI. The effect of infection was found to be significant on cytokines with a strong interaction with time. Taken together, the data suggest that Th2 immune response is predominating in subclinical haemonchosis. The economic loss in term of body weight gain due to subclinical haemonchosis was considerable.
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Affiliation(s)
- A K Nehra
- Division of Temperate Animal Husbandry, Indian Veterinary Research Institute, Mukteswar Campus, India
| | - G R Gowane
- ICAR-Central Sheep and Wool Research Institute, Avikanagar, India
| | - A Kuriyal
- Division of Temperate Animal Husbandry, Indian Veterinary Research Institute, Mukteswar Campus, India
| | - A Chaurasiya
- Division of Temperate Animal Husbandry, Indian Veterinary Research Institute, Mukteswar Campus, India
| | - R Kumar
- Division of Temperate Animal Husbandry, Indian Veterinary Research Institute, Mukteswar Campus, India
| | - D B Bhinsara
- Division of Temperate Animal Husbandry, Indian Veterinary Research Institute, Mukteswar Campus, India
| | - B C Parthasarathi
- Division of Temperate Animal Husbandry, Indian Veterinary Research Institute, Mukteswar Campus, India
| | - K Bhawana
- Division of Temperate Animal Husbandry, Indian Veterinary Research Institute, Mukteswar Campus, India
| | - R K Khare
- Division of Temperate Animal Husbandry, Indian Veterinary Research Institute, Mukteswar Campus, India
| | - A Prasad
- Division of Parasitology, Indian Veterinary Research Institute, Izatnagar Campus, India
| | - D Chandra
- Division of Parasitology, Indian Veterinary Research Institute, Izatnagar Campus, India
| | - M Sankar
- Division of Temperate Animal Husbandry, Indian Veterinary Research Institute, Mukteswar Campus, India.
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Abdul-Wahab T, Betancourt J, Hassan F, Al. Thani S, Choueiri H, Jain N, Malanga G, Murrell W, Prasad A, Verborgt O. Initial treatment of complete rotator cuff tear and transition to surgical treatment: systematic review of the evidence. Muscles Ligaments Tendons J 2019. [DOI: 10.32098/mltj.01.2016.05] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
| | | | - F. Hassan
- Orthocure Medical Center, United Arab Emirates University, Dubai, United Arab Emirates
| | - S. Al. Thani
- Orthocure Medical Center, United Arab Emirates University, Dubai, United Arab Emirates
| | - H. Choueiri
- Physioart Centre, Dubai, United Arab Emirates
| | - N.B. Jain
- Vanderbilt University School of Medicine, Nashville, USA
| | | | - W.D. Murrell
- Department of Orthopaedic Sports Medicine, Dr. Humeira Badsha Medical Center, Dubai, United Arab Emirates, and Department of Orthopaedics, Rehabilitation, and Pediatry, Ft. Belvoir Community Hospital, Ft. Belvoir, Virginia, USA
| | - A. Prasad
- Osteopathic Health Centre, Dubai, United Arab Emirates
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Deitel M, Rheinwalt KP, Musella M, Weiner R, Kular KS, Peraglia C, Prasad A, Luciani RC, Sakran N, Plamper A. Comment on: Acid and non-acid gastroesophageal reflux after single anastomosis gastric bypass. Surg Obes Relat Dis 2018; 14:1419-1420. [PMID: 30268322 DOI: 10.1016/j.soard.2018.08.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- M Deitel
- SFASMBS, CRCSC Director MGB-OAGB Club, Toronto, Canada.
| | | | - M Musella
- Advanced Biomedical Sciences Department, "Federico II" University, Naples, Italy
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Marcus JL, Hurley LB, Prasad A, Zaroff J, Klein DB, Horberg MA, Go AS, DeLorenze GN, Quesenberry CP, Sidney S, Lo JC, Silverberg MJ. Recurrence after hospitalization for acute coronary syndrome among HIV-infected and HIV-uninfected individuals. HIV Med 2018; 20:19-26. [PMID: 30178911 DOI: 10.1111/hiv.12670] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/18/2018] [Indexed: 01/28/2023]
Abstract
OBJECTIVES We evaluated the association of HIV infection and immunodeficiency with acute coronary syndrome (ACS) recurrence, and with all-cause mortality as a secondary outcome, after hospitalization for ACS among HIV-infected and HIV-uninfected individuals. METHODS We conducted a retrospective cohort study within Kaiser Permanente Northern California of HIV-infected and HIV-uninfected adults discharged after ACS hospitalization [types: ST-elevation myocardial infarction (STEMI), non-STEMI, or unstable angina] during 1996-2010. We compared the outcomes of ACS recurrence and all-cause mortality within 3 years, both overall by HIV status and stratified by recent CD4 count, with HIV-uninfected individuals as the reference group. Hazard ratios (HRs) were obtained from Cox regression models with adjustment for age, sex, race/ethnicity, year, ACS type, smoking, and cardiovascular risk factors. RESULTS Among 226 HIV-infected and 86 321 HIV-uninfected individuals with ACS, HIV-infected individuals had a similar risk of ACS recurrence compared with HIV-uninfected individuals [HR 1.08; 95% confidence interval (CI) 0.76-1.54]. HIV infection was independently associated with all-cause mortality after ACS hospitalization overall (HR 2.52; 95% CI 1.81-3.52). In CD4-stratified models, post-ACS mortality was higher for HIV-infected individuals with CD4 counts of 201-499 cells/μL (HR 2.64; 95% CI 1.66-4.20) and < 200 cells/μL (HR 5.41; 95% CI 3.14-9.34), but not those with CD4 counts ≥ 500 cells/μL (HR 0.67; 95% CI 0.22-2.08), compared with HIV-uninfected individuals (P trend < 0.001). CONCLUSIONS HIV infection and immunodeficiency were not associated with recurrence of ACS after hospitalization. All-cause mortality was higher among HIV-infected compared with HIV-uninfected individuals, but there was no excess mortality risk among HIV-infected individuals with high CD4 counts.
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Affiliation(s)
- J L Marcus
- Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston, MA
| | - L B Hurley
- Kaiser Permanente Division of Research, Oakland, CA
| | - A Prasad
- Kaiser Permanente San Francisco Medical Center, San Francisco, CA
| | - J Zaroff
- Kaiser Permanente San Francisco Medical Center, San Francisco, CA
| | - D B Klein
- Kaiser Permanente San Leandro Medical Center, San Leandro, CA
| | - M A Horberg
- Kaiser Permanente Mid-Atlantic Permanente Research Institute, Rockville, MD, USA
| | - A S Go
- Kaiser Permanente Division of Research, Oakland, CA
| | | | | | - S Sidney
- Kaiser Permanente Division of Research, Oakland, CA
| | - J C Lo
- Kaiser Permanente Division of Research, Oakland, CA
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Chauhan S, Khan SA, Prasad A. Irradiation-Induced Compositional Effects on Human Bone After Extracorporeal Therapy for Bone Sarcoma. Calcif Tissue Int 2018; 103:175-188. [PMID: 29500623 DOI: 10.1007/s00223-018-0408-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Accepted: 02/26/2018] [Indexed: 12/19/2022]
Abstract
The present study investigates Raman scattering of human bone irradiated with 50 Gy single dose during therapeutic treatment of Ewing and Osteosarcoma. Bone quality was evaluated via mineral-to-matrix ratio, degree of crystallinity, change in amount of calcium, and carbonate substitution. Alteration in collagen and its cross-links was quantified through second-derivative deconvolution of Amide I peak. A dose of 50 Gy radiation leads to almost 50% loss of mineral content, while maintaining mineral crystallinity, and small changes in carbonate substitution. Deconvolution of Amide I suggested modifications in collagen structure via increase in amount of enzymatic trivalent cross-linking (p < 0.05). Overall irradiation led to detrimental effect on bone quality via changes in its composition, consequently reducing its elastic modulus with increased plasticity. The study thus quantifies effect of single-dose 50 Gy radiation on human bone, which in turn is necessary for designing improved radiation dosage during ECRT and for better understanding post-operative care.
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Affiliation(s)
- S Chauhan
- Applied Mechanics, Indian Institute of Technology, Delhi, India.
- Mechanical Engineering, GBPUAT, Pant Nagar, India.
| | - S A Khan
- Orthopedics, All India Institute of Medical Sciences, New Delhi, India
| | - A Prasad
- Applied Mechanics, Indian Institute of Technology, Delhi, India
- Mechanical Engineering, South Dakota State University, Brookings, USA
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Prasad A, Lancini D, Guppy-Coles K, Atherton J, Thomas L, Prasad S. Prognostic Value of Left Atrial Function Following Myocardial Infarction. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Shrestha R, Ranjit A, Prasad A, Kulshrestha R. Outcome Analysis of Neonates following Laparotomy for Acute Abdomen: A Prospective Study. Kathmandu Univ Med J (KUMJ) 2018; 16:35-38. [PMID: 30631014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Background Low and middle-income countries (LMIC) bear the majority of the global pediatric surgical burden. Despite increasing volume of pediatric surgeries being performed in LMIC, outcomes of these surgeries in low and middle-income countries remain unknown due to lack of robust data. Objective The objective of our study was to collect data on and evaluate neonatal surgical outcomes at a tertiary level center in India. Method The surgical outcomes data of all neonates undergoing laparotomy between February 15, 2015 and October 14, 2015, at Sir Ganga Ram Hospital, New Delhi, India was collected prospectively. Descriptive statistics were used to determine the rates of various postoperative outcomes. Result A total of 37 neonatal surgeries were performed during the study period. The mean age of the neonates on the day of surgery was 7 days (range: 1-30 days). Most of the neonates (72.9%, n=27) were males. About 40% (n=15) of the neonates were preterm and 15 (40.5%) of them were small for gestational age. In our study, 10 neonates (28.6%) needed ventilation for 48 hours or less after surgery and 5 neonates (13.5%) were kept Nil per Oral (NPO) postoperatively for more than 10 days. Out of 37 neonates, 4 (10.80%) developed a surgical site infection and 8 neonates (21.6%) had postoperative sepsis. The in-hospital mortality rate among neonates undergoing laparotomy during the study period was 8.1 deaths per 100 neonates. Conclusion Co-ordination of care among pediatric surgeons, neonatologists, nursing and anesthesia team is required for optimal surgical outcome.
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Affiliation(s)
- R Shrestha
- Department of Surgery, Nepal Medical College and Teaching Hospital, Kathmandu, Nepal
| | - A Ranjit
- Center For Surgery And Public Health, Boston, Brigham And Women's Hospital, Boston, USA
| | - A Prasad
- Sir Ganga Ram Hospital, Department of Pediatric Surgery, New Delhi, India
| | - R Kulshrestha
- Sir Ganga Ram Hospital, Department of Pediatric Surgery, New Delhi, India
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Prasad A, Lancini D, Guppy-Coles K, Atherton J, Thomas L, Prasad S. Predictors of New-Onset Atrial Fibrillation Following Myocardial Infarction. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Arora N, Tripathi S, Kumar P, Mondal P, Mishra A, Prasad A. Recent advancements and new perspectives in animal models for Neurocysticercosis immunopathogenesis. Parasite Immunol 2017; 39. [PMID: 28467600 DOI: 10.1111/pim.12439] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Accepted: 04/25/2017] [Indexed: 02/06/2023]
Abstract
Neurocysticercosis (NCC), one of the most common parasitic diseases of the central nervous system, is caused by Taenia solium. This parasite involves two hosts, intermediate hosts (pig and human) and a definitive host (human) and has various stages in its complex life cycle (eggs, oncosphere, cysticerci and adult tapeworm). Hence, developing an animal model for T. solium that mimics its natural course of infection is quite challenging. We have reviewed here the animal models frequently used to study immunopathogenesis of cysticercosis and also discussed their usefulness for NCC studies. We found that researchers have used mice, rats, guinea pigs, dogs, cats and pigs as models for this disease with varying degrees of success. Mice and rats models have been utilized extensively for immunopathogenesis studies due to their relative ease of handling and abundance of commercially available reagents to study these small animal models. These models have provided some very exciting results for in-depth understanding of the disease. Of late, the experimentally/naturally infected swine model is turning out to be the best animal model as the disease progression closely resembles human infection in pigs. However, handling large experimental animals has its own challenges and limitations.
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Affiliation(s)
- N Arora
- School of Basic Sciences, Indian Institute of Technology Mandi, Mandi, India
| | - S Tripathi
- School of Basic Sciences, Indian Institute of Technology Mandi, Mandi, India.,Department of Medicine, Boston University School of Medicine, Boston, MA, USA
| | - P Kumar
- School of Basic Sciences, Indian Institute of Technology Mandi, Mandi, India
| | - P Mondal
- School of Basic Sciences, Indian Institute of Technology Mandi, Mandi, India
| | - A Mishra
- Cellular and Molecular Neurobiology Unit, Indian Institute of Technology Jodhpur, Jodhpur, India
| | - A Prasad
- School of Basic Sciences, Indian Institute of Technology Mandi, Mandi, India
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Van Der Schee M, Dickson J, Ruparel M, Janes S, Dragonieri S, Fuller L, Grundy S, Baldwin D, Crosbie P, Prasad A, Haris M, Barlow A, Calvert L, Wight A, Bennett J, Gaga M, Chee S, Conteh V, Ledson M, Hodkinson C, Boschmans J, Smith R, Parris R, Apthorp D, Kitchen S, Allsworth M, Boyle B, Rintoul R. P3.05-001 Breath Analysis for Early Detection of Lung Cancer: The LuCID Study. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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27
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Spinthakis N, Farag M, Gorog D, Mahmood H, Prasad A, Srinivasan M. P1378Percutaneous coronary intervention with drug-eluting stent versus coronary artery bypass grafting: a meta-analysis of patients with left main coronary artery disease. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p1378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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28
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Mowforth J, Steiner H, Prasad A. P101 Structured Holistic Nursing Assessment (HNA) in Buckinghamshire Healthcare Trust (BHT) for lung cancer & mesothelioma patients: process and findings. Thorax 2016. [DOI: 10.1136/thoraxjnl-2016-209333.244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Latchumikanthan A, Prasad A, Sankar M, Pavan Kumar P, Jithin MV, Aravind M. Polymerase chain reaction (PCR) based amplification of hmcp3 and hmcp6 cysteine protease genes of Haemonchus contortus from small ruminants. J Parasit Dis 2016; 40:1313-1316. [PMID: 27876938 DOI: 10.1007/s12639-015-0679-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2015] [Accepted: 03/10/2015] [Indexed: 11/27/2022] Open
Abstract
Haemonchus contortus is a haematophagous nematode in small ruminants population and causes anaemia, weakness and mortality especially in young animals. In the present study, hmcp3 partial gene of 836 bp and hmcp6 full length gene of 1041 bp were amplified from the cDNA of Bareilly isolate of adult male H. contortus by polymerase chain reaction. Further gene characterization and expression studies are warranted to know the immunoprophylactic potential of hmcp3 and hmcp6 proteins of H. contortus.
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Affiliation(s)
- A Latchumikanthan
- Division of Veterinary Parasitology, Indian Veterinary Research Institute, Izatnagar, Bareilly, 243 122 UP India
| | - A Prasad
- Division of Veterinary Parasitology, Indian Veterinary Research Institute, Izatnagar, Bareilly, 243 122 UP India
| | - M Sankar
- Division of Temperate Animal Husbandry, Indian Veterinary Research Institute, Mukteshwar, Nainital, 263 138 Uttarakhand India
| | - Pesingi Pavan Kumar
- Division of Veterinary Public Health, Indian Veterinary Research Institute, Izatnagar, Bareilly, 243 122 UP India
| | - M V Jithin
- Division of Veterinary Medicine, Indian Veterinary Research Institute, Izatnagar, Bareilly, 243 122 UP India
| | - M Aravind
- Division of Veterinary Parasitology, Indian Veterinary Research Institute, Izatnagar, Bareilly, 243 122 UP India
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Prasad A. A rare case of thorachoschisis with gastroschisis – A case report. J ANAT SOC INDIA 2016. [DOI: 10.1016/j.jasi.2016.08.434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Abstract
It is widely perceived that competition in the Indian banking sector has increased since the inception of the financial sector reforms in 1992. Using annual data on scheduled commercial banks for the period 1996–2004, the article evaluates the validity of this proposition in the Indian context. The empirical evidence reveals that Indian banks earn revenues as if under monopolistic competition.
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Affiliation(s)
- A. Prasad
- A. Prasad is Advisor to Executive Director for India, International Monetary Fund
| | - Saibal Ghosh
- Saibal Ghosh is Assistant Adviser, Department of Economic Analysis, Reserve Bank of India, Mumbai
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Kular K, Prasad A, Ramana B, Baig S, Mahir Ozmen M, Valeti M, Ribeiro R, De Luca M, Apers J, Mahawar K. Petersen's hernia after mini (one anastomosis) gastric bypass. J Visc Surg 2016; 153:321. [DOI: 10.1016/j.jviscsurg.2016.05.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Abstract
Lymphoproliferative disorders are known to complicate immunosuppressive therapy and two cases of primary lymphoma of CNS (PCNSL) have previously been described in association with mycophenolate mofetil (MMF) treatment. We report the third case of PCNSL in a patient with lupus nephropathy while on MMF treatment. PCNSL may be seen more frequently considering the increased use of MMF in immunosuppressant responsive conditions.
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Affiliation(s)
- P F Finelli
- Department of Neurology, Hartford Hospital and University of Connecticut School of Medicine, Hartford, CT 06102-5037, USA.
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Prasad A, Ali-Khan A, Mortimer P. Leg Ulcers and Oedema: A Study Exploring the Prevalence, Aetiology, and Possible Significance of Oedema in Venous Ulcers. Phlebology 2016. [DOI: 10.1177/026835559000500306] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Oedema is commonly associated with venous leg ulcers, and is thought to discourage wound healing. However, little attention has been paid to the mechanism or significance of oedema in this condition. This study assessed the prevalence of oedema and lymphatic insufficiency and their influence on wound healing amongst 56 patients. Two populations were studied – community and hospital-managed, with an almost equal number of cases in each. The presence of oedema and lymphatic insufficiency was assessed clinically and, the duration of the current ulcer was used as an indicator of healing rate. Oedema was present in 55% of patients, but its prevalence in the community-treated group was much greater than in the hospital-treated group. Lymphatic insufficiency was present in 22% of patients with an equal prevalence in the two groups. The presence of oedema was associated with a longer duration of ulcer whereas the use of diuretics was associated with a shorter duration. This suggests that oedema may be an important factor in discouraging the healing of ulcers. Greater attention should be paid clinically to the prevention of oedema, as its presence suggests inadequate treatment and a failure to heal.
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Affiliation(s)
- A. Prasad
- Department of Dermatology St. George's Hospital, Tooting, London SW17, UK
| | - A. Ali-Khan
- Department of Dermatology St. George's Hospital, Tooting, London SW17, UK
| | - P. Mortimer
- Department of Dermatology St. George's Hospital, Tooting, London SW17, UK
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Douglas H, Ahlquist A, Ledger S, Prasad A, Hill L, Dudley J, Rand S. 145 5-year milestone reached in collaborative partnership between CF Unit and UK fitness provider. J Cyst Fibros 2016. [DOI: 10.1016/s1569-1993(16)30383-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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36
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Mohan B, Prasad A, Kaur H, Hallur V, Gautam N, Taneja N. Fecal carriage of carbapenem resistant enterobacteriaceae (CRE) and risk factor analysis in hospitalised patients: A single centre study from India. Int J Infect Dis 2016. [DOI: 10.1016/j.ijid.2016.02.268] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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37
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Macri L, Singer A, McClain S, Crawford L, Prasad A, Kohn J, Clark R. Immediate tangential excision accelerates wound closure but does not reduce scarring of mid-dermal porcine burns. Ann Burns Fire Disasters 2016; 29:54-61. [PMID: 27857653 PMCID: PMC5108230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Accepted: 10/10/2015] [Indexed: 06/06/2023]
Abstract
Current evidence supports the use of excision to remove eschar from deep dermal and full-thickness burns. However, the role of excision of mid-dermal burns remains unclear. This study aimed to develop a porcine model that could produce reproducible middermal thermal burns that undergo tangential excision; and investigate the effects of immediate tangential excision (30 minutes postburn) on healing and scarring. An aluminum bar preheated in hot water (70°C) was applied for 20 or 30 s to produce a total of sixteen mid-dermal burns per pig on each of six pigs. Thirty minutes after burn creation, half of the burns were tangentially excised. Four partial- thickness wounds per pig were created as controls. Depth of burn injury (1 and 24 h), reepithelialization (7 and 10 d) and scar depth (28 d) were assessed microscopically. Total scar surface area was grossly evaluated on day 28. Exposure of porcine skin to a preheated aluminum bar at 70 °C for 20 or 30 sec resulted in reproducible mid-dermal burns, where immediate excision enhanced complete wound closure as judged by complete re-epithelialization, but did not reduce initial depth of injury, scar contraction and scar depth. Immediate surgical intervention is sufficient to enhance wound closure, but not to mitigate mid-dermal burn scar formation. This work provides a suitable animal model to evaluate novel therapies that may be used to inhibit burn progression, accelerate wound closure and decrease scarring, especially those therapies unable to penetrate burn eschar.
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Affiliation(s)
- L.K.. Macri
- The New Jersey Center for Biomaterials, Rutgers, The State University of New Jersey, USA
| | - A.J. Singer
- Department of Emergency Medicine, Stony Brook University, New York, USA
| | - S.A. McClain
- Department of Emergency Medicine, Stony Brook University, New York, USA
- Department of Dermatology, Stony Brook University, New York, USA
| | - L. Crawford
- Department of Biomedical Engineering, Stony Brook University, New York, USA
| | - A. Prasad
- Department of Biomedical Engineering, Stony Brook University, New York, USA
| | - J. Kohn
- The New Jersey Center for Biomaterials, Rutgers, The State University of New Jersey, USA
| | - R.A.F. Clark
- Department of Biomedical Engineering, Stony Brook University, New York, USA
- Department of Dermatology, Stony Brook University, New York, USA
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Sankar M, Bhatt M, Gowane GR, Narayanan K, Kumar M, Zahid AK, Saravanan BC, Allie I, Subramani KV, Sharma AK, Prasad A. Effect of non-genetic factors on the prevalence of Stilesia globipunctata in the goat. Helminthologia 2016. [DOI: 10.1515/helmin-2016-0011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Summary
Despite its high prevalence and pathogenicity, Stilesia globipunctata is a neglected cestode infection of ruminants in the tropics and sub-tropics. The present study reports the effect of sex, age, year and month on the prevalence of S. globipunctata in the goat. A total of 5208 eviscerated intestines of the goat carcasses were screened for a period of seven years, from January 2001 to December 2007. The overall prevalence of 36.6 % was significantly affected by the factors studied (P<0.05). Male goats were more susceptible to the S. globipunctata infection than that of female (P<0.05). Goat aged between 6 months and 1 year were found to be significantly more susceptible (P<0.05) which was followed by animals between 1 and 4 years of age and then more than 4 years of age. Morbidity was high (59 to 86 %) in animals of less than one year of age. The striking observation was that the prevalence peaked during monsoon and at nadir in May.
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Affiliation(s)
- M. Sankar
- Indian Veterinary Research Institute, Mukteswar, India
| | - M. Bhatt
- Indian Veterinary Research Institute, Mukteswar, India
| | - G. R. Gowane
- Indian Veterinary Research Institute, Mukteswar, India
| | - K. Narayanan
- Indian Veterinary Research Institute, Izatnagar, India
| | - M. Kumar
- National Institute of High Security Animal Diseases, Bhopal, India
| | - A. K. Zahid
- Sher-E-Kashmir University of Agricultural Sciences and Technology of Kashmir, Srinagar, India
| | | | - I. Allie
- Sher-E-Kashmir University of Agricultural Sciences and Technology of Kashmir, Srinagar, India
| | | | - A. K. Sharma
- Indian Veterinary Research Institute, Mukteswar, India
| | - A. Prasad
- Indian Veterinary Research Institute, Izatnagar, India
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39
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Bandodkar A, William B, Kannan T, Prasad A, Bharathidasan M, Jayaprakash R, George R. Intra-articular Injection of Ascorbic Acid and Dexamethasone for Management of Osteoarthritis in Dogs. ACTA ACUST UNITED AC 2016. [DOI: 10.9734/arrb/2016/23345] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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40
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Mukherjee F, Prasad A, Bahekar VS, Rana SK, Rajendra L, Sharma GK, Srinivasan VA. Evaluation of immunogenicity and protective efficacy of a liposome containing Brucella abortus S19 outer membrane protein in BALB/c mice. Iran J Vet Res 2016; 17:1-7. [PMID: 27656221 PMCID: PMC4898012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Revised: 09/22/2015] [Accepted: 10/10/2015] [Indexed: 06/06/2023]
Abstract
The use of liposome as an adjuvant and a vaccine carrier has been cited previously in the literature. It has also been shown to be effective in enhancing the immunogenicity of vaccine candidates. BALB/c mice immunized subcutaneously with outer membrane protein (OMP) of Brucella abortus S19 vaccine strain entrapped in a commercial cationic liposome (S19-OMP-liposome) for vaccine delivery, showed enhanced protection (P<0.05) compared to groups of mice inoculated with S19 OMP alone, S19 live B. abortus vaccine and liposome alone, when challenged intra-peritoneally with virulent B. abortus strain 544 at 30 days post-immunization (DPI). The S19-OMP-liposome preparation was found to be safer compared to the live B. abortus S19 vaccine at 15 days post challenge (DPC), as evidenced by the significant difference in spleen weight between S19-OMP-liposome, S19 OMP and S19 live as well as the liposome control groups (P<0.01). Antibody isotype response profiles of the experimental groups indicated that the immune response was Th1 cell mediated. The protective advantage conferred to mice immunized with S19-OMP entrapped in liposome over those immunized with the live B. abortus S19 version, could probably be related to the significantly different response of IgG2b at 30 DPI (P<0.01), IgG2a (P<0.01), IgG2b (P<0.01) and IgG3 (P<0.05) at the DPC stages, respectively.
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Affiliation(s)
- F. Mukherjee
- Research & Development Laboratory, National Dairy Development Board, Gachibowli, Hyderabad 500032, Telangana, India
- Authors contributed equally
| | - A. Prasad
- Research & Development Laboratory, National Dairy Development Board, Gachibowli, Hyderabad 500032, Telangana, India
- Department of Bio-Technology, Jawaharlal Nehru Technological University, Hyderabad 500032, Telangana, India
- Authors contributed equally
| | - V. S. Bahekar
- Research & Development Laboratory, National Dairy Development Board, Gachibowli, Hyderabad 500032, Telangana, India
| | - S. K. Rana
- Research & Development Laboratory, National Dairy Development Board, Gachibowli, Hyderabad 500032, Telangana, India
| | - L. Rajendra
- Research and Development, Santha Biotechnniques (AS Sanofi Company), Athivelly PlotNo. 4, Medchal, Ranga Reddy District, Hyderabad-501401, India
| | - G. K. Sharma
- Animal Health, National Dairy Development Board, Anand, 388001, Gujarat, India
| | - V. A. Srinivasan
- Animal Health, National Dairy Development Board, 33 Telecom Nagar, Gachibowli, Hyderabad 500032, Telangana, India
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41
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Prasad A, Lead JR, Baalousha M. An electron microscopy based method for the detection and quantification of nanomaterial number concentration in environmentally relevant media. Sci Total Environ 2015; 537:479-486. [PMID: 26322596 DOI: 10.1016/j.scitotenv.2015.07.117] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Revised: 07/23/2015] [Accepted: 07/24/2015] [Indexed: 06/04/2023]
Abstract
Improved detection and characterization of nanomaterials (NMs) in complex environmental media requires the development of novel sampling approaches to improve the detection limit to be close to environmentally realistic concentrations. Transmission electron microscopy (TEM) is an indispensable metrological tool in nanotechnology and environmental nanoscience due to its high spatial resolution and analytical capabilities when coupled to spectroscopic techniques. However, these capabilities are hampered by the conventional sample preparation methods, which suffer from low NM recovery. The current work presents a validated, fully quantitative sampling technique for TEM that overcomes conventional sample preparation shortcomings, and thus enables the use of TEM for measurement of particle number concentration and their detection in complex media at environmentally realistic concentrations. This sampling method is based on ultracentrifugation of NMs from suspension onto a poly-l-lysine (PLL) functionalized TEM grid, using active deposition (by ultracentrifugation) and retention (by PLL interactions with NM surface) of NMs on the substrate, enabling fully quantitative analysis. Similar analysis with AFM was satisfactory in simple media but the lack of chemical-selectivity of AFM limits its applicability for the detection of NMs in complex environmental samples. The sampling approach was validated using both citrate- and PVP-coated AuNMs in pure water, which demonstrated an even distribution of NM on the TEM grid and high NM recovery (80-100%) at environmentally relevant NM concentrations (ca. 0.20-100 μg L(-1)). The applicability of the sampling method to complex environmental samples was demonstrated by the quantification of particle number concentration of AuNMs in EPA soft water (with and without Suwannee River fulvic acid) and lake water. This sample preparation approach is also applicable to other types of NMs with some modifications (e.g. centrifugation force and time) to insure full sample recovery. This TEM sampling method is key to the accurate quantification of NM number concentration, and therefore to improving our understanding of environmental fate, behavior, effects and dose of NMs.
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Affiliation(s)
- A Prasad
- School of Geography, Earth and Environmental Sciences, College of Life and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom
| | - J R Lead
- School of Geography, Earth and Environmental Sciences, College of Life and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom; Center for Environmental Nanoscience and Risk, Department of Environmental Health Sciences, Arnold School of Public Health, University South Carolina, Columbia 29208, SC, United States.
| | - M Baalousha
- Center for Environmental Nanoscience and Risk, Department of Environmental Health Sciences, Arnold School of Public Health, University South Carolina, Columbia 29208, SC, United States.
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Ruickbie S, Prasad A, Jones PW, Baker EH. P224 The association between degree of airflow limitation and degree of coronary artery atheroma is not attributable to smoking history: Abstract P224 Table 1. Thorax 2015. [DOI: 10.1136/thoraxjnl-2015-207770.360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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43
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Ruickbie SV, Prasad A, Jones PW, Baker EH. S123 Coronary atherosclerosis detected at elective angiography is more severe in people with COPD than in those without: Abstract S123 Table 1. Thorax 2015. [DOI: 10.1136/thoraxjnl-2015-207770.129] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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44
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Castelijns B, Ponten JEH, Van de Poll MCG, Nienhuijs SW, Smulders JF, Hu ZW, Wu JM, Wang ZG, Idani H, Asami S, Nakano K, Miyake S, Harano M, Miyoshi H, Araki H, Ogawa T, Takahashi K, Shiozaki S, Ninomiya M, Prasad A, Todkar J, Asti E, Lovece A, Sironi A, Bonavina L, Wright R, Wurst H, Zhang C, Li HL, Ke LM, Loi K, Hua R, Yao QY, Chen H, Okinyi W, Odende K, Ndungu B, Ndonga A, Kiragu P, Kelimu A, Alimujiang M, Tian W, Bing M. Hiatal Hernia. Hernia 2015; 19 Suppl 1:S13-7. [PMID: 26518789 DOI: 10.1007/bf03355320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
| | | | | | | | | | | | - J M Wu
- Gastroesophageal Reflux Disease Department, Second Artillery General Hospital PLA, 2. Xuanwu Hospital, Capital Medic, Beijing, China
| | | | - H Idani
- Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan
| | - S Asami
- Fukuyama City Hospital, Fukuyama, Japan
| | - K Nakano
- Fukuyama City Hospital, Fukuyama, Japan
| | - S Miyake
- Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan
| | - M Harano
- Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan
| | - H Miyoshi
- Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan
| | - H Araki
- Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan
| | - T Ogawa
- Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan
| | - K Takahashi
- Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan
| | - S Shiozaki
- Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan
| | - M Ninomiya
- Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan
| | - A Prasad
- Apollo Hospital, New Delhi, India
| | - J Todkar
- Hiranandani Hospital, Mumbai, India
| | - E Asti
- IRCCS Policlinico San Donato, Milan, Italy
| | - A Lovece
- IRCCS Policlinico San Donato, Milan, Italy
| | - A Sironi
- IRCCS Policlinico San Donato, Milan, Italy
| | - L Bonavina
- IRCCS Policlinico San Donato, Milan, Italy
| | - R Wright
- Cascade Hernia Institute, Puyallup, USA
| | - H Wurst
- Meridian Surgery Center, Puyallup, USA
| | - C Zhang
- Department of Minimally Invasive Surgery, Xinjiang people Hospital, Urumqi, China
| | | | | | - K Loi
- St George Private Hospital, Sydney, Australia
| | | | - Q Y Yao
- Department of General Surgery, Hernia Center, Shanghai Medical College, Fudan University, Shanghai, China
| | | | - W Okinyi
- The University of Nairobi, Nairobi, Kenya
| | - K Odende
- Kenyatta National Hospital, Nairobi, Kenya
| | - B Ndungu
- The University of Nairobi, Nairobi, Kenya
| | - A Ndonga
- The Mater Hospital, Nairobi, Kenya
| | - P Kiragu
- Maralal County Hospital, Maralal, Kenya
| | - A Kelimu
- Department of Minimally Invasive Surgery, hernias and abdominal wall surgery, People's Hospital of Xinjiang Uyghur Auton, Urumqi, China
| | | | - W Tian
- Department of General Surgery, 1st affiliated hospital of PLA general hospital, Beijing, China
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Prasad A, Burneo J, Corbett B. A national profile of neurodevelopmental disabilities in Canadian children: data from the National Longitudinal Study of Children and Youth. J Neurol Sci 2015. [DOI: 10.1016/j.jns.2015.08.715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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46
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Abi-Raad R, Virk RK, Dinauer CA, Prasad A, Morotti RA, Breuer CK, Sosa JA, Udelsman R, Rivkees SA, Prasad ML. C-Cell Neoplasia in Asymptomatic Carriers of RET Mutation in Extracellular Cysteine-Rich and Intracellular Tyrosine Kinase Domain. Hum Pathol 2015; 46:1121-8. [DOI: 10.1016/j.humpath.2015.04.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Revised: 04/23/2015] [Accepted: 04/24/2015] [Indexed: 11/30/2022]
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47
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Chandra S, Prasad A, Yadav N, Latchumikanthan A, Rakesh R, Praveen K, Khobra V, Subramani K, Misri J, Sankar M. Status of benzimidazole resistance in Haemonchus contortus of goats from different geographic regions of Uttar Pradesh, India. Vet Parasitol 2015; 208:263-7. [DOI: 10.1016/j.vetpar.2015.01.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2014] [Revised: 01/05/2015] [Accepted: 01/08/2015] [Indexed: 10/24/2022]
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48
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Davies G, Aurora P, McDonald A, Prasad A, Bilton D, Stocks J, Stanojevic S. S66 The Gli Spirometry Reference Equations Influence The Apparent Rate Of Decline In Fev1 Among Children And Adolescents With Cystic Fibrosis. Thorax 2014. [DOI: 10.1136/thoraxjnl-2014-206260.72] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Abstract
A bulk acoustic mode micro-electro-mechanical dual resonator platform is utilised to study the evaporation of sub-microliter water droplets from the surface of the resonator. An analytical formulation for the observed frequency shift and the measure dependence of resonant frequency on the modes of evaporation which is consistent with the optically derived data. The resonators access only a thin layer of the liquid through shear contact and, hence, the response is not affected by the bulk mass of the droplet to first order. A relationship between the droplet contact area and the elapsed time was established for the evaporation process and is used to derive a value of the diffusion coefficient of water in air that is found to be in reasonable agreement with literature values. This work introduces a new tool for the electro-mechanical monitoring of droplet evaporation with relevance to applications such as biosensing in liquid samples of sub-microliter volumes.
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Affiliation(s)
- A Prasad
- Nanoscience Centre, Department of Engineering, University of Cambridge, 11 JJ Thomson Avenue, Cambridge, CB3 0FF, UK.
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50
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Allaie IM, Prasad A, Sankar M. Cysteine proteinase genes in Indian strain of Haemonchus contortus. Mol Biochem Parasitol 2014; 196:117-21. [PMID: 25239651 DOI: 10.1016/j.molbiopara.2014.09.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2014] [Revised: 09/04/2014] [Accepted: 09/08/2014] [Indexed: 11/27/2022]
Abstract
The genes of microvillar cysteine proteinases such as hmcp1, hmcp6 and gcp7 of phenotypically distinct morphotypes of female H. contortus having knobbed and linguiform vulvar flaps were cloned and characterized. Complementary DNA (cDNA) was synthesized from total RNA of both the morphotypes. The hmcp1, hmcp6 and gcp7 genes were amplified from cDNA. The amplicons were cloned in pDRIVE T/A cloning vector and sequenced by Sanger's dideoxy method. The nucleotide and deduced amino acid sequences were compared with the USA/UK strain H. contortus cysteine proteinase sequences. The cysteine proteinase genes of Indian strain show considerable variations with USA/UK strains. Our results revealed that Indian strain of H. contortus expresses both UK strain (hmcp1 and 6) and USA strain (gcp7) cysteine proteinases.
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Affiliation(s)
- I M Allaie
- Network Programme on GI Parasitism, Division of Parasitology, Indian Veterinary Research Institute, Izatnagar, Bareilly 243122, India.
| | - A Prasad
- Network Programme on GI Parasitism, Division of Parasitology, Indian Veterinary Research Institute, Izatnagar, Bareilly 243122, India
| | - M Sankar
- Network Programme on GI Parasitism, Division of Parasitology, Indian Veterinary Research Institute, Izatnagar, Bareilly 243122, India
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